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  4. The increasing acidity order of phenol, p-methyl phenol, m-nitrophenol and p-nitrophenol is

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Q. The increasing acidity order of phenol, p-methyl phenol, m-nitrophenol and p-nitrophenol is

Rajasthan PETRajasthan PET 2006

Solution:

Acidity increases due to $ -I $ effect and decreases due to $ +I $ effect. Hence, the increasing acidity order is as: p-methyl phenol < phenol < ni-nitrophenol < p-nitrophenol